Global sowing and harvesting windows of major crops

Using daily weather data for the period 1996–2005 as the inputs to a rule-based model, we derive calendars for maize, rice, winter and spring wheat and soybeans around the year 2000 with a spatial resolution of 0.5° in latitude and longitude. Winter and spring wheat and rainfed versus irrigated conditions are differentiated. Separate calendars for rainfed and irrigated conditions and three representative varieties (short-, medium- and long-season varieties) are estimated. The daily probabilities of sowing and harvesting derived using the model can be converted into sowing and harvesting windows, respectively, with user-defined thresholds.

采用1996年至2005年期间的每日气象数据作为基于规则的模型的输入，我们推导出约在公元2000年左右的玉米、水稻、冬小麦和春小麦以及大豆的年度历书，其经纬度空间分辨率为0.5度。区分了冬小麦和春小麦以及雨养与灌溉条件。针对雨养和灌溉条件以及三种代表性品种（短季、中季和长季品种）分别估计了历书。利用模型推导出的每日播种和收获的概率可以转换为播种和收获窗口，具体阈值由用户定义。